Continuity mistake: When Leela says she wants to enroll in to the army Kif is standing right next to Brannigan. When it cuts Kif is gone. (00:02:20)
The Honking - S3-E1
Continuity mistake: When the two guys are smashing the cab there is a bunch of magazines lying on the ground. When it cuts to Bender's point of view of the guys the magazines are gone. (00:08:10)
Other mistake: After Hermes has limboed under the door he is being told off by LaBarbara. Amy is standing next to her but her nose is missing. From front on her nose is usually a half circle.
Continuity mistake: In the scene where Fry and the professor is trying to make Gunter choose between the banana and the hat, the distance between Fry, the professor, and Leela changes noticeably between shots. First Fry and the professor are wide apart with Leela behind Fry. Then after Leela hears the robot-house's boat approaching, they're all suddenly down by the lake standing next to each other.
Kif Gets Knocked Up a Notch - S5-E5
Continuity mistake: When Zap Brannigan is about to shoot at the evil holograms the horse has fangs, but when they fly out the window the horse's fangs disappear.
Anthology of Interest 2 - S4-E3
Continuity mistake: Just before human-Bender is given the nachos in the bar, we see a blue table littered with food debris directly behind him. When he starts stuffing himself with the nachos the table is red and the litter is gone. When the crew prevent him from eating nachos and 'going to the bathroom' at the same time, the bar is a wide open space with no tables at all.
Continuity mistake: When Gunter is trying to figure out where the hat goes, the banana disappears and reappears between shots. When Gunter finally figures out the hat goes on the head the banana is nowhere to be seen, yet when he needs it to do some calculations the banana is on the ground right next to him.
Continuity mistake: In the shot where the note from Leela's file gets ripped off, note the small tear on the note. Then in a later shot when Fry is showing the Professor the note the small tear has disappeared but then later on the small tear is back again.
The Honking - S3-E1
Revealing mistake: In the final battle, Bender has fry trapped into the seat inside of him, and he drives over a ramp and nearly smashes into the original were-car mid-air. But when the were-car lands on the same ramp that Bender took off from, we see that the furnace is literally touching the end of the ramp. How did Bender get up enough speed to launch himself into the air, especially accidentally (he would have had to turn 90 degrees to get onto the ramp) with the furnace that close? Also at the start of this scene, we see the were-car crying in front of the furnace, and the ramp is nowhere to be seen. (00:19:50)
Continuity mistake: Fry's bottle changes from being in his right to his left hand and the colour also changes when he's listening to the comedian. (00:11:25)
Continuity mistake: Right at the beginning when Leela is opening Nibbler's food, there is no pipe connecting to the microwave, yet when Bender is attacked there is a pipe. (00:00:55)
How Hermes Requisitioned His Groove Back - S2-E14
Continuity mistake: When Hermes said that the form that Morgan filled out for a "regulation date that ended in regulation disappointment" was stamped only four times. The form shows three red stamp marks close to each other and a fourth one at the bottom right corner of the page by itself. Hermes then puts the form on 1.0s' desk and the first red stamp in the upper left corner is now by itself and the second and third stamp marks are now next to the fourth stamp mark. When we get a close-up of 1.0 looking at the form the stamp marks are back in their original place. (00:20:10)
Continuity mistake: When Bender is a "female" and is putting stuff in his locker, in one angle you can see a yellow item next to his pink handbag. Then in the wider angle, this item is gray.
A Big Piece of Garbage - S1-E8
Continuity mistake: When the team first meet the Mayor, the writing on the Mayor's nameplate disappears after it is first seen, and the button on his desk that he pushes wasn't there before. (00:10:35)
Continuity mistake: When Bender starts talking about Clem Johnson at the baseball game, his bottle is empty, but in the next shot it is half full. (00:03:05)
I, Roommate - S1-E3
Continuity mistake: When Bender goes back to his closet alone, the chain hanging beside the light bulb disappears after he closes the door. (00:15:50)
Continuity mistake: After Brannigan has explained the plan to attack the Neutral Planet, Fry turns around in his chair and you can see the head rest goes together with the chair. When it cuts the head rest sits on a bar attached to the chair. (00:16:35)
Continuity mistake: When it cuts to Elzar's restaurant we see, in the wide-shot, Bender cutting his food and liftint the fork with his left hand. When it cuts to a close-up of him he has his right hand lifted. (00:10:45)
How Hermes Requisitioned His Groove Back - S2-E14
Continuity mistake: When Hermes jumps on to Nr.1.0's flying desk there is no sign of his lamp. When it cuts his lamp is on the desk. (00:18:30)
How Hermes Requisitioned His Groove Back - S2-E14
Continuity mistake: During the poker game the chips on the table change color and position several times during the shots. (00:02:30)
Answer: You are thinking about episode 20 of series 2 - "Anthology of Interest I". She technically never kills anyone, but in the episode she ask a "What if machine" (one of the Professor's inventions) what would happen if she was more impulsive. The machine then shows the more impulsive Leela killing off the Professor to get the money from his will and thereafter killing Hermes, Bender, Scruffy, Cubert, Nibler, Amy and Zoidberg to cover it up. Finally she does something really impulsive with Fry.
Andreas[DK]